s1 = randn(1,1000);
s2 = randn(1,1000);

scatter(s1,s2),xlabel('Signal 1'),ylabel('Signal 2'),title('Scatter plot for Gaussian Source Signals');

S(1,:)=s1;
S(2,:)=s2;

A = [4 2;3 5];

X = A*S;

figure,scatter(X(1,:),X(2,:));xlabel('Signal Mixture 1');ylabel('Signal Mixture 2');title('Scatter plot for Signal Mixtures');